What makes Comp "R" lifters necessary?
01-13-2005, 08:31 PM
#2
they are not necessary,i think they kind of suck. i have comp 850-16 i got from speed inc and they work great. hell...some board members have 550hp and still run stock lifters. i have near 500hp my self,so when i did the head swap i added new lifters for the hell of it.
01-13-2005, 08:45 PM
#4
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HP level doesn't mean squat. I can spray a junk yard motor and make 800 hp, for a little while anyway, with some stock springs.
I would say it is your cam lobe, rpm, valve train weight and spring pressure.
In my case I guessed that the stock style lifters will not deal well with a 239 at .050" duration and .651" lift lobe and 6800 rpm.
I would say it is your cam lobe, rpm, valve train weight and spring pressure.
In my case I guessed that the stock style lifters will not deal well with a 239 at .050" duration and .651" lift lobe and 6800 rpm.
01-14-2005, 04:46 AM
#6
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01-14-2005, 08:26 AM
#9
It's a domino effect. Big and aggressive cam lobes need stiff springs. Stiff springs put more load on the lifter. Stock and stock-type lifters can't take the extra load, so you are forced to upgrade...that's where Comp-R lifters come in.
It might be interesting to see what pressures Morel lifters can tolerate. Would be nice not to have to fool w/ adjustable rockers or shimming the stockers.
It might be interesting to see what pressures Morel lifters can tolerate. Would be nice not to have to fool w/ adjustable rockers or shimming the stockers.
01-14-2005, 09:54 AM
#11
Originally Posted by Cstraub
The Morels in the marine market are getting 150 to 170# seat pressure and over the nose around 400 to 440#'s.
